Organizing your bills is a cinch if you…
A. Deal with them … separate them from the junkmail … AS THEY COME THROUGH THE DOOR (the act of dealing with it also implants in your mind what is important and must be dealt with. Have a mail-opener and paper trashcan handy or permanently stationed at the designated mail-sorting spot.
B. You have an organizer sorter system which can be as simple as these two that I recommend:
1) This (see photo above) is the system I use and love, and the use of which, I am expanding and improvising for many other tasks as well.
A main pocket for important contact (eg. Bank) numbers, lots of pockets, easy to sort, label, I tag those for KIV action and keep only the latest bill (latest two months) to keep the file slim.
This is a file-folder-cum-document-case which can be hung on a wall-hook for easy access in an office, and unlike the accordion filebox, you can see every document and label clearly at a glance. You can also put it away neatly in a drawer or cubicle when not in use.
2) A simple box sorter placed on the workdesk or kitchen counter or other designated command-center of the house, works for many people. This is an age-old tradition seen in hotels.
The above sorter idea was taken from http://www.home-storage-solutions-101.com/organize-bills.html where you can read more on organizing bills.